A second connection is also under the coil cover for electronic tach hook-up. Fits 1964-90 V8s - 260, 307, 330, 350, 400, 403, 425, and 455 engines. This is a new distributor, not a second or blem.
I was impressed with the product i received. I was leary because of the price and products don't always match the photos. It ended up being exactly what they advertise. Installed it my cutlass and not a problem. Quality all around.